Finding the Fourth Proportional to 194,404.67, 291,646.49 and 82,085.21

Step by Step Solution

1. Step 1: Write the proportion equation
   194,404.67 : 291,646.49 = 82,085.21 : x
2. Step 2: Convert to fraction form
   194,404.67/291,646.49 = 82,085.21/x
3. Step 3: Cross multiply
   194,404.67x = 291,646.49 × 82,085.21
4. Step 4: Simplify right side
   194,404.67x = 23,939,863,377.41
5. Step 5: Solve for x
   x = 23,939,863,377.41/194,404.67
6. Step 6: Final answer
   x = 123,144.49